.w {
    width: 1200px;
    margin: 0 auto;
}
.header {
    height: 100px;
    line-height: 100px;
    display: flex;
    align-items: center;
}
.header a {
    display: block;
    height: 100%;
    line-height: 100px;
    width: 171px;
    height: 62px;
    background-image: url(../images/logo.png);
}

.footer  a{
    padding: 0 10px;
}
.footer p {
    text-align: center;
    margin-top: 15px;
}